RE: CA 25% Extra
Its in a big white box under my work table...lol! There is a guy at my local field that has one. He flies the heck out of it! I answered your question based on his info and a ton of threads about this plane here.
Also dont put the elevator and rudder servos in the rear of the fuse it will be tail heavy with a glow motor. Put them right behind the wing tube with pull-pull for the rudder and 1 servo per elevator half and all you'll have to do is move the batt to get the correct CG. I think the instructions for the 24 and 27% planes are shared. With a 40-50cc gas engine and the servos in the rear of the fuse the 27% will balance fine but not the 24% with glow.